这里的这个as是介词吗?

问题描述:

这里的这个as是介词吗?
Examining informational and identity signifiers in a devel-
opmental study, it was found that the eight-year-olds in the
studytreatedbrandsasinformationalandperceptualcues:
they associated a brand with a product category or certain per-
ceptual features.

在treat...as 这个结构中as是介词,意思是“把……当做,认为……是……”,as单独表示“作为”都是介词,如
a job as a writer